# 2021 GW RD server with Ubuntu 18.04 Desktop setup
###### tags: `Setup`,`Tutorial`
### Mount disk
* Use ubuntu disks UI
* Gear icon -> "Edit mount options"
* Turn off "User Session Defaults"
* Display Name `$YOUR_NAME`
* Mount Point: `/mnt/$YOUR_NAME` (all lower case)
* Requires reboot

### (optional) Setup vlan
* Rcommanded: use the default "_Network Manager_"

    nm-connection-editor

* Other option: Netplan + interface (**TBD**)

    # /etc/network/interface

    # interfaces(5) file used by ifup(8) and ifdown(8)
    auto lo
    iface lo inet loopback

    #auto eno1
    #iface eno1 inet static
    #    address 172.19.134.51
    #    netmask 255.255.255.0
    #    gateway 172.19.134.254
    #    dns-nameservers 8.8.8.8

    #auto eno1.133
    #iface eno1.133 inet static
    #    address 172.19.133.51
    #    netmask 255.255.255.0
    #    vlan-raw-device eno1
    #    gateway 172.19.133.254
    #    broadcast 172.19.133.255
    #    dns-nameservers 8.8.8.8
    #    dns-nameservers 1.1.1.1

    # /etc/netplan/*.yaml
    network:
    version: 2
    ethernets:
        eno1: {}
    vlans:
        eno1.133:
            id: 101
            link: eno1
            addresses: [172.19.133.51/24]
            gateway4: 172.19.133.254
            nameservers:
                search: [local]
                addresses: [1.1.1.1, 8.8.8.8]

# Common software
### Common dependencies

sudo apt-get install vim \
htop \
kate git\
openssh-server \
byobu \
build-essential cmake unzip pkg-config ctags

### Profiling (optional)

sudo apt install  linux-tools-generic \
linux-tools-$(uname -r) libunwind-dev google-perftools

Modify profiling authentication

# edit from 3 to -1 / from ? to 0
sudo sh -c " echo -1 > /proc/sys/kernel/perf_event_paranoid"
sudo sh -c " echo 0 > /proc/sys/kernel/kptr_restrict"

### NV driver & CUDA for CBTN
**Please make sure what you're doing**
Note: do not use .run script if your'e planning to use tensorRT

sudo apt-get install nvidia-driver-470

* [Cuda 11.1.0](https://developer.nvidia.com/cuda-11.1.0-download-archive?target_os=Linux&target_arch=x86_64&target_distro=Debian&target_version=10&target_type=deblocal) (Required due to TensorRT 7.2.3)
11.1.1: https://developer.nvidia.com/cuda-11.1.1-download-archive?target_os=Linux&target_arch=x86_64&target_distro=Debian&target_version=10)

    #wget https://developer.download.nvidia.com/compute/cuda/11.1.1/local_installers/cuda-repo-debian10-11-1-local_11.1.1-455.32.00-1_amd64.deb
    wget https://developer.download.nvidia.com/compute/cuda/11.1.0/local_installers/cuda-repo-debian10-11-1-local_11.1.0-455.23.05-1_amd64.deb
    sudo dpkg -i cuda-repo-debian10-11-1-local_11.1.1-455.32.00-1_amd64.deb
    sudo apt-key add /var/cuda-repo-debian10-11-1-local/7fa2af80.pub
    sudo add-apt-repository contrib # is this required?
    sudo apt-get update
    sudo apt-get -y install cuda cuda-11-1

* [Cuda 11.2](https://developer.nvidia.com/cuda-11.2.0-download-archive?target_os=Linux&target_arch=x86_64&target_distro=Debian&target_version=10&target_type=runfilelocal): During install script, please disable install of driver-460 (driver-470 should support 11.1)

    wget https://developer.download.nvidia.com/compute/cuda/11.2.0/local_installers/cuda_11.2.0_460.27.04_linux.run
    sudo sh cuda_11.2.0_460.27.04_linux.run

* [TensorRT 7.2.3](https://docs.nvidia.com/deeplearning/tensorrt/release-notes/tensorrt-7.html#rel_7-2-3)

### OpenCV (4.2.0)
https://github.com/opencv/opencv/releases/tag/4.2.0
https://github.com/opencv/opencv_contrib/releases/tag/4.2.0

# System dependencies

# libjasper
sudo add-apt-repository "deb http://security.ubuntu.com/ubuntu xenial-security main"
sudo apt update
sudo apt install libjasper1 libjasper-dev

# image and video I/O libraries.
sudo apt-get install libjpeg-dev libpng-dev libtiff-dev \
 libtbb2 libtbb-dev libjasper-dev libdc1394-22-dev \
 libavcodec-dev libavformat-dev libswscale-dev libv4l-dev \
 libxvidcore-dev libx264-dev
#GTK for our GUI backend, mathematical optimizations libraries, python

sudo apt-get install libgtk-3-dev libatlas-base-dev \
 gfortran python3-dev python3-numpy

# Download release 4.2.0 or above to wherever place you'd like
mkdir opencv && cd opencv
wget -O opencv.zip https://github.com/opencv/opencv/archive/4.2.0.zip
wget -O opencv_contrib.zip https://github.com/opencv/opencv_contrib/archive/4.2.0.zip
unzip opencv.zip && mv opencv-4.2.0 opencv
unzip opencv_contrib.zip && mv opencv_contrib-4.2.0 opencv_contrib

# Setup configuration and build
cd opencv && mkdir build && cd build
cmake -D CMAKE_BUILD_TYPE=Release \
	-D CMAKE_INSTALL_PREFIX=/usr/local \
	-D INSTALL_PYTHON_EXAMPLES=ON \
	-D INSTALL_C_EXAMPLES=ON \
	-D OPENCV_ENABLE_NONFREE=ON \
	-D PYTHON3_EXECUTABLE=/usr/bin/python3 \
	-D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
	-D BUILD_EXAMPLES=ON ..
make -j7  # Modify according to available CPUs
sudo make install

### Ceres Solver

# Dependencies: CMake, google-glog + gflags, BLAS & LAPACK, Eigen3
sudo apt-get install cmake libgoogle-glog-dev libatlas-base-dev libeigen3-dev

# SuiteSparse and CXSparse (optional)
# - If you want to build Ceres as a *static* library (the default)
#   you can use the SuiteSparse package in the main Ubuntu package
#   repository:
sudo apt-get install libsuitesparse-dev

# - However, if you want to build Ceres as a *shared* library, you must
#   add the following PPA:
sudo add-apt-repository ppa:bzindovic/suitesparse-bugfix-1319687
sudo apt-get update
sudo apt-get install libsuitesparse-dev


mkdir ceres && cd ceres
# Download release archive of 1.14.0
wget https://github.com/ceres-solver/ceres-solver/archive/1.14.0.tar.gz
tar zxf 1.14.0.tar.gz

# Build the code and install the library
# It can also be exported using CMake which
# allows Ceres to be used without requiring installation, see the documentation
# for the EXPORT_BUILD_DIR option for more information.
mkdir ceres-bin && cd ceres-bin
cmake ../ceres-solver-1.14.0
make -j3
make test
sudo make install

### Add group/ user (with Ubuntu)

sudo add user $USER             # Add user
sudo groupadd -g 16384 $GROUP   # Add group
usermod -aG sudo $USER          # Add user to group "sudo":

# Other helpers
#List User: cut -d: -f1 /etc/passwd
#Expire user: sudo usermod --expiredate 1 $USER
#Check User status: sudo chage -l $USER
#List sudoers: grep -Po '^sudo.+:\K.*$' /etc/group
#Change to user:  sudo -u $USER -s

#Delete user: 
deluser --remove-home newuser